Astronomy 2015

Question	Answer
doppler effect	An apparent change in wavelength caused by a change in distance between two objects.
rotation	Spinning on an axis.
eccentricity	Out of roundness.
universe	Everything that exists.
geocentric model	Earth-centered.
solar system	Made up of a star and all the objects that revolve around it.
local time	Equal for all locations on the same meridian (line of longitude).
constellation	A group of stars that form a pattern in the sky.
revolution	The amount of time to go once around the sun.
coriolis effect	A deflection of materials caused by Earth’s rotation.
eclipse	Occurs when celestial objects move into another’s shadow.
foucault pendulum	A device which provides evidence that the Earth rotates.
tides	Rising and falling of the oceans caused by the moon’s gravitational attraction to the Earth.
ellipse	A closed curve around two points.
celestial object	Anything outside Earth’s atmosphere.
comet	Compared to a dirty snowball. Has a tail when gets too close to the sun.
asteroid	A solid rocky or metallic object that orbits the sun.
focus	A fixed point.
altitude	The angular distance of a celestial object above the horizon.
luminosity	The brightness of an object.
meteor	Also called a shooting star.
galaxy	A large grouping of stars.
heliocentric model	Sun-centered.

Resource summary

	Created by Brian Hedspeth about 9 years ago